Finding the Fourth Proportional to 100,915.53, 139,252.97 and 62,147.19
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Solution
The fourth proportional to 100,915.53, 139,252.97 and 62,147.19 is: 85,756.68
Step by Step Solution
- Step 1: Write the proportion equation
100,915.53 : 139,252.97 = 62,147.19 : x - Step 2: Convert to fraction form
100,915.53/139,252.97 = 62,147.19/x - Step 3: Cross multiply
100,915.53x = 139,252.97 × 62,147.19 - Step 4: Simplify right side
100,915.53x = 8,654,180,473.92 - Step 5: Solve for x
x = 8,654,180,473.92/100,915.53 - Step 6: Final answer
x = 85,756.68
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.